Article View: sci.physics.relativity
Article #7084Re: The speed of gravity revisited
From: Androcles
Date: Wed, 01 Oct 2008 02:42
Date: Wed, 01 Oct 2008 02:42
26 lines
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3500 bytes
"Tom Van Flandern" <tomvf@metaresearch.org> wrote in message news:Gd6dnbJV7qs0In_VnZ2dnUVZ_sjinZ2d@wavecable.com... > Pentcho Valev writes: > >> [Valev]: Does the speed of light vary with the frequency, in accordance >> with Einstein's 1911 equation c'=c(1+V/c^2), or is it the wavelength that >> varies with the frequency (as half of today's Einsteinians claim)? > > When the time coordinate is the proper time of the observer, the speed > of light is invariant by construction. When coordinate time is used > instead, the speed of light slows in a stronger potential field. For > example, radar beams slow when passing the Sun in any analysis using > barycentric coordinate time. This is called the "Shapiro effect". > >> [Valev]: If Einstein's 1911 equation is correct, then perhaps light >> leaves the gravitational field of the emitting body, continues its >> journey and in the end reaches the observer having a reduced speed all >> along? > > Basically, you are correct. But it does depend on what you are using as > a clock or time coordinate, which is why the answer is not simply "yes" or > "no". -|Tom|- > Why is the Coriolis effect now called the Shapiro effect? http://ww2010.atmos.uiuc.edu/(Gh)/guides/mtr/fw/gifs/coriolis.mov
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X-Google-Thread: 10f545,8dee8c24c8d12da8 X-Google-Thread: fa4c1,a189fdfd0bd8ce7e X-Google-Thread: f74ae,a189fdfd0bd8ce7e X-Google-Attributes: gid10f545,gidfa4c1,gidf74ae,domainid0,public,usenet X-Google-Language: ENGLISH,ASCII-7-bit Path: arc1-ca.pugleaf.net!g2news1.google.com!news2.google.com!border1.nntp.dca.giganews.com!nntp.giganews.com!newsfeed00.sul.t-online.de!t-online.de!newsfeed.freenet.de!feeder.news-service.com!69.16.177.246.MISMATCH!cyclone03.ams.highwinds-media.com!news.highwinds-media.com!npeersf02.ams.highwinds-media.com!newsfe17.ams2.POSTED!7564ea0f!not-for-mail From: "Androcles" <Headmaster@Hogwarts.physics> Newsgroups: sci.physics.relativity,sci.physics,fr.sci.physique,sci.astro References: <1c3c1cac-9393-4a22-b310-04ed51c3c200@x41g2000hsb.googlegroups.com> <naWdnbHc9LbBl-XVnZ2dnUVZ_uCdnZ2d@wavecable.com> <Zrsgk.12894$LG4.4083@nlpi065.nbdc.sbc.com> <1ZOdnVs1QrUQNxrVnZ2dnUVZ_g6dnZ2d@wavecable.com> <KYSdnXLKP5gAhRPVnZ2dnUVZ8uednZ2d@bt.com> <zumdnUoJFLM_IhLVnZ2dnUVZ_rLinZ2d@wavecable.com> <g6qk6u$mdd$1@skeeter.ucdavis.edu> <XIGdne7DjINbSQnVnZ2dnUVZ_vGdnZ2d@wavecable.com> <g8veqg$oj9$1@skeeter.ucdavis.edu> <4OCdnZwmw51acCvVnZ2dnUVZ_oTinZ2d@wavecable.com> <892e672c-dc20-4797-a2ae-1af7a28999b4@a70g2000hsh.googlegroups.com> <-7ednZWnKIQbJF3VnZ2dnUVZ_gCdnZ2d@wavecable.com> <a0a92c22-4efc-4b77-af68-045ea7ca3218@8g2000hse.googlegroups.com> <UJadnXXjrLYINVPVnZ2dnUVZ_sLinZ2d@wavecable.com> <5d5d71d0-770b-4a5d-ab24-4bea312a0234@m3g2000hsc.googlegroups.com> <0tKdnRGt2OGMHUHVnZ2dnUVZ_gOdnZ2d@wavecable.com> <3940d1ab-88ca-429e-9279-d760805cc1fa@c58g2000hsc.googlegroups.com> <Gd6dnbJV7qs0In_VnZ2dnUVZ_sjinZ2d@wavecable.com> Subject: Re: The speed of gravity revisited Lines: 31 X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 6.00.2900.5512 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 X-RFC2646: Format=Flowed; Original Message-ID: <DwBEk.17336$a24.2829@newsfe17.ams2> NNTP-Posting-Host: 82.34.70.125 X-Complaints-To: http://netreport.virginmedia.com X-Trace: newsfe17.ams2 1222829219 82.34.70.125 (Wed, 01 Oct 2008 02:46:59 UTC) NNTP-Posting-Date: Wed, 01 Oct 2008 02:46:59 UTC Organization: virginmedia.com Date: Wed, 1 Oct 2008 03:42:13 +0100